Both oral herpes (usually contracted from Herpes Simplex Virus I/HSV-1) and genital herpes (usually contracted from Herpes Simplex Virus II/HSV-2) are incurable sexually transmitted diseases (STDs). Oral herpes is very common in the United States, --roughly 80 percent of the population has the virus-- but many people do not know that they can pass it on to their partners as genital herpes.